Before Terry Pratchett died, Gaiman told his friend he would adapt their novel about an angel and a devil stopping the apocalypse. As Good Omens starts on TV, he discusses fame, politics and honouring that promise

The beloved illustrator and author of more than 140 books, Pieńkowski’s magical art has won him the BookTrust lifetime achievement award. Now living with Alzheimer’s, his partner and admirers reflect on his career